(c.1933)
linocut
(1958)
lithograph
(1954)
(1959)
(c.1994)
woodblock
(1961)
(1992)
etching
(31 May 1991)
(1999, March)
(1950)
stencil
(1983)
(c.1955)
(c.1934)
(1955)
(1986)
photocopy
(1989)
screenprint
(1993)